Cut 'em open and pour them in a jar with a tight seal. When you need a pack, microwave hell out of some and rubber band them into a piece of coffee filter.
The colored beads indicate how water saturated they are. When they're nuked and dried out, they change color. YMMV as some manufacturers use different colors or none at all. Whatever. Nuke 'em and reuse.
It's an exciting hobby.
As a rather dull man I find it quite exciting! I actually live in a very humid place, last year I lost massive massive amounts of aspen oyster mushrooms I dried thoroughly dried and packed in plastic ziplocks, many with 2 ziplocks, they all went bad. Like 40 pounds dried I kid you not, a week of foraging during the solstice (their big flush here,) all ruined.
I have other problems, heating with wood, condensation and humidity mildews clothes, especially if I leave for work for days at a time.
I was wondering if there is some cheap thing I could use for dessicant going forward? I don't buy new shit that has silica in it often so that's not an option.